01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.wicket.application;
18:
19: import org.apache.wicket.Component;
20:
21: /**
22: * Listener interface that receives messages when components are constructed.
23: * This mechanism is used by {@link org.apache.wicket.authorization.IAuthorizationStrategy},
24: * but can additionally be used to implement things like dependency injection
25: * support etc.
26: *
27: * <strong>Implementations must be thread safe</strong>
28: *
29: * @author Eelco Hillenius
30: */
31: public interface IComponentInstantiationListener {
32: /**
33: * Called for every component that is instantiated. This method is called
34: * <strong>during</strong> construction, so do not depend on the
35: * construction being completed yet. The id is guaranteed to be set before
36: * this call.
37: *
38: * @param component
39: * the component that is being instantiated.
40: */
41: void onInstantiation(Component component);
42: }
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